Key switch and electronic device

Details Key switch and electronic device Key switch and electronic device

2006-10-24

2006-10-24

Lee, K. (Department: 2832)

Electricity: circuit makers and breakers

Solid contact

Membrane type

C200S314000, C335S205000

Reexamination Certificate

active

07126072

ABSTRACT:
A jog dial switch, which functions as a key switch, includes a key sheet, a rotatable key top arranged on the key sheet, and a movement amount detector for detecting movement amount of the key top. The movement amount detector includes four permanent magnets arranged on the key top, three Hall elements, and an electric circuit for processing signals output from the Hall elements. The Hall elements and the electric circuit are arranged below the key sheet. The key sheet is formed by a water resistant material and covers the electric circuit.

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patent: 2004-220369 (2004-08-01), None

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